I'm thinking of finding an old 390 and building it up, while I keep the original 390 in my '72. It runs, but it's stock with 2 bbl.
My question is: I found an old 1968 LTD with factory 390. I think it may have come with a 4 barrel intake (cast iron), etc.
So, is a 390 a 390, in any Ford? I know that sounds stupid, but if I get a 390 from something else, will it bolt up, same splines, etc, to my 4 speed tranny? It wouldn't do any good to build up a performance engine with RV cam and lifters, and not be able to bolt it in.
I really don't want to pull the F250's engine and rebuild it, because I use it as my daily driver. It was a replacement for the stock 360 around 15 years ago, and the truck's not going to be matching #'s.
Are all 390 blocks the same? Is there a 4 bolt main vs. a 2 bolt main in the FE's? Do I need to look for casting numbers?
Thanks in advance!
BTW: I got my rusty floorpans replaced, interior fixed up, in-cab tank vatted and cleaned, and welded up a heavy duty 2 inch receiver hitch for my camper. You guys were right; replacing the water pump bypass hose without 90 degree fittings was the way to go. Now I need to fab a fan-shroud with my MIG welder.
I'll post updated pictures soon.
p.s. LOTS of old Fords here in New Mexico. Just need to know where to look.



